At CPX24.com webmaster can monetize its website by placing CPX24 code into his website code.
He is earning money thanks to pop-unders (new browser window is opened to a visitor of your website and in this window is an website of the CPX24 advertiser)
I requested payout of 19.9USD paypal in April 2nd, 2014, lets see if i get it..
Payout page:
CPX24 codes to paste on your site:
Advertising banners: